AS 3251 then KL 7451 at San Francisco
Santa Ana → San Francisco → New York JFK
Timetable, San Francisco time
09:34AS 3251 from Santa Ana at the gatealso AA 9286
21:35KL 7451 to New York JFK leaves the gatealso MU 8703
12 h 01 apart on the timetable
KL 7451 leaves 12 h 01 after AS 3251 arrives on the timetable: more than half a day, so not a connection we count.